diff --git a/concourse/images/Dockerfile.xenial.erb b/concourse/images/Dockerfile.bionic.erb
similarity index 89%
rename from concourse/images/Dockerfile.xenial.erb
rename to concourse/images/Dockerfile.bionic.erb
index ee6f2b235c..1a25403f7a 100644
--- a/concourse/images/Dockerfile.xenial.erb
+++ b/concourse/images/Dockerfile.bionic.erb
@@ -1,4 +1,4 @@
-FROM ubuntu:xenial
+FROM ubuntu:bionic
 
 <%= File.read "debian-prelude.step" %>
 
diff --git a/concourse/nokogiri-pr.yml b/concourse/nokogiri-pr.yml
index 542cd1d257..685eceab80 100644
--- a/concourse/nokogiri-pr.yml
+++ b/concourse/nokogiri-pr.yml
@@ -258,7 +258,7 @@ jobs:
           platform: linux
           image_resource:
             type: docker-image
-            source: {repository: "flavorjones/nokogiri-test", tag: xenial}
+            source: {repository: "flavorjones/nokogiri-test", tag: bionic}
           inputs:
             - name: ci
             - name: nokogiri-pr
diff --git a/concourse/nokogiri-pr.yml.generated b/concourse/nokogiri-pr.yml.generated
index 8218ec5241..3ecf19a7ee 100644
--- a/concourse/nokogiri-pr.yml.generated
+++ b/concourse/nokogiri-pr.yml.generated
@@ -486,7 +486,7 @@ jobs:
           platform: linux
           image_resource:
             type: docker-image
-            source: {repository: "flavorjones/nokogiri-test", tag: xenial}
+            source: {repository: "flavorjones/nokogiri-test", tag: bionic}
           inputs:
             - name: ci
             - name: nokogiri-pr
diff --git a/concourse/nokogiri.yml b/concourse/nokogiri.yml
index f34b29f71f..f7e1002240 100644
--- a/concourse/nokogiri.yml
+++ b/concourse/nokogiri.yml
@@ -150,7 +150,7 @@ jobs:
           platform: linux
           image_resource:
             type: docker-image
-            source: {repository: "flavorjones/nokogiri-test", tag: xenial}
+            source: {repository: "flavorjones/nokogiri-test", tag: bionic}
           inputs:
             - name: ci
             - name: nokogiri
diff --git a/concourse/nokogiri.yml.generated b/concourse/nokogiri.yml.generated
index b93e667de8..037d199a5b 100644
--- a/concourse/nokogiri.yml.generated
+++ b/concourse/nokogiri.yml.generated
@@ -350,7 +350,7 @@ jobs:
           platform: linux
           image_resource:
             type: docker-image
-            source: {repository: "flavorjones/nokogiri-test", tag: xenial}
+            source: {repository: "flavorjones/nokogiri-test", tag: bionic}
           inputs:
             - name: ci
             - name: nokogiri